Fish Tank Heaters & Aquarium Thermometers | PetSmart

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I have a 5 gallon tank with a betta and a couple chinese alge eaters. With summer coming and the air conditioner running, I bought a small heater that is for 2 to 15 gallon tanks. The water temperature is currently at 70 degrees, can I put the heater in the tank with the fish currently living in 70 degrees water? Will warming up the water hurt them or make them sick?Photo provided by Flickr

One gallon tanks can be difficult to heat. The small water volume leaves it open to severe fluctuations and most aquarium aren’t made for such small containers. If your room is quite cool you may be able to use the . At just 7.5 watts it is one of the only water heaters made for tiny aquariums. It is important to note that these heaters do not have an automatic shut-off when they reach the desired like most aquarium heaters have (for larger tanks). This means you could easily overheat your water posing a danger to your fish. If you choose to go with a mini-heater you should absolutely have a thermometer in the tank and you should check it frequently. On warmer days you may need to unplug the heater completely.
Photo provided by FlickrPhoto provided by FlickrPhoto provided by FlickrThe Fluval E fish tank heater ensures that you have live data from your aquarium, always keeping you on top of things. The temperature in your aquarium is constantly monitored and displayed on a small LCD screen – in real-time. If the temperature goes outside the preset values by +/- 2°F, the screen will change in color, alerting you of any risks. If any external factors (like an aquarium chiller) cause a >5.5°F change in temperature, the screen will flash to draw your attention.If you own a Betta fish tank, or a nano cube, you probably know the struggles of finding a heater that fits. Fluval’s “Mini” Heater has a height of just 6 inches, ensuring easy placement in most small fish tanks. The water-proof design only makes placement easier, as you can place it horizontally, as well as vertically. The temperature dial is visible and easy to access, while the impact-resistant glass ensures better durability. This small aquarium heater comes in two sizes – 25W and 50W. While very powerful for it’s size, this is only enough power if you own a small tank. We recommend the Fluval E (or any other heater from our list) if you own a tank of 10 gallons and above.The Fluval Marina Mini is an inexpensive, compact heater from Hagen, one of the most highly-regarded companies in the fishkeeping business. At only 6 inches in length, this submersible heater can find a home in even the smallest or most oddly-shaped Betta tanks, and the included bracket and suction cups make installing it a breeze.Most freshwater fish come from tropical environments and thus require an aquarium heater to maintain the water temperature in the mid- to high-seventies or low-eighties. With or without tropical fish in your tank, a heater with a quality thermometer will also help to control and prevent the temperature changes in your fish tank that cause stress and harm for your fish. In this review, we will provide you some of the best aquarium heaters for tanks from small 1-gallon tanks to extra-large ones. Besides, we also provide you some tips to choose the right heater as well as how to use them in the right way.

Fish Tank & Aquarium Heaters | PetSmart

The heater can maintain the water temperature properly so that the fish aren’t stressed by constant temperature changes. And like in humans (but more so) stress in fish can be detrimental to their health. These temperature changes can come on quick when the tank is very small, which is one reason why for newbies I always recommend larger tanks. The bigger tanks result in slower temperature changes so that you give yourself time to rectify any mistake.